Utility knife



FIG. 1 is a top perspective view showing the new design with the blade in a stowed position;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is an end view thereof;

FIG. 7 is another end view thereof;

FIG. 8 is another side view thereof;

FIG. 9 is a side view thereof with the blade in a first deployed position; and,

FIG. 10 is a side view thereof with the blade in a second deployed position.

The broken lines shown in the drawings represent portions of the utility knife that form no part of the claimed design. 

CLAIM The ornamental design for a utility knife, as shown and described. 